TREA

Keiji Kawada

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Salinometer, saccharimeter and pH meter
    • Patent number D906143
    • Issue date Dec 29, 2020
    • ATAGO CO., LTD.
    • Hideyuki Amamiya
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

    Viscometer
    • Patent number D851523
    • Issue date Jun 18, 2019
    • ATAGO CO., LTD.
    • Hideyuki Amamiya
    • D10 - Measuring, testing, or signalling instruments